Jumpy tach, possible fix - SV650.org

11-04-05, 06:44 PM

Ok, I have a stock tach on my 2000 SV, and during the last race it kept jumping around a lot. Usually, when the bike gets around 8K or 9K rpm, it would jump to redline, then drop down around 4K or so and bounce around for a while before returning to life a few seconds later.

After taking it apart, I think I found the problem. There is a capacitor missing from the circuit board. Now if I just knew what size it was so I could fix it...

Anyone have a stock tach from a 99-02 SV that they can take apart real quick?? All I need to know is the capacitance (in µF) and voltage printed on the side...

Here's a picture of where it should be:

Anybody? pleeeeease?

TSM · 11-04-05, 07:37 PM

where did the original one go? the speedo is a closed unit.

11-04-05, 08:06 PM

when I bought the bike, only the tach was present. The speedo had been separated from the tach and ditched, so there was a big hole in the side of the tach housing. I suppose it rattled loose and fell out at some point. I thought about just buying a new stock tach, but the cheapest I can find is about $100, and there's no way I'm going to pay that if I can fix this one myself.

11-04-05, 06:44 PM	#1
dnwhoop02 Guest Posts: n/a	Jumpy tach, possible fix Ok, I have a stock tach on my 2000 SV, and during the last race it kept jumping around a lot. Usually, when the bike gets around 8K or 9K rpm, it would jump to redline, then drop down around 4K or so and bounce around for a while before returning to life a few seconds later. After taking it apart, I think I found the problem. There is a capacitor missing from the circuit board. Now if I just knew what size it was so I could fix it... Anyone have a stock tach from a 99-02 SV that they can take apart real quick?? All I need to know is the capacitance (in µF) and voltage printed on the side... Here's a picture of where it should be: Anybody? pleeeeease?

11-04-05, 07:37 PM	#2
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	where did the original one go? the speedo is a closed unit. __________________ OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions

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11-04-05, 08:06 PM	#3
dnwhoop02 Guest Posts: n/a	when I bought the bike, only the tach was present. The speedo had been separated from the tach and ditched, so there was a big hole in the side of the tach housing. I suppose it rattled loose and fell out at some point. I thought about just buying a new stock tach, but the cheapest I can find is about $100, and there's no way I'm going to pay that if I can fix this one myself.